How to create a PSU for battery operated screwdriver running 3.6V DC?

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me_guitarist

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how to create a PSU for battery operated screwdriver running 3.6V DC?
High Ampier needed.
 

Re: Power Supply

These scredrivers may draw ≈6Amps from 3.6V battery, so you have to build a switching voltage regulator rated for that current ..
Try something like LM2678-ADJ ..
**broken link removed**

Regards,
IanP
 

Power Supply

Dear IanP,
can u pls post up a diagram?

Thanks!
 

Re: Power Supply

The attached picture is in the link I provided in the previous post .. also, in this PDF file you will find full description of this IC and component selection ..

Regards,
IanP
 

Re: Power Supply

In case it is hard for you to make a switching power supply yourself, so consider an analog one, just use a LM317 and a power transistor. Circuit and explanation you can get from LM317 datasheet from National semiconductor website, datasheet from this manufacturer contains full set of applications.

nguyennam
 

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